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Re: IDL and OpenGL [message #56467 is a reply to message #17065] Tue, 30 October 2007 15:17 Go to previous messageGo to previous message
Robbie is currently offline  Robbie
Messages: 165
Registered: February 2006
Senior Member
> exactly what tasks it does using OpenGL is not transparent
I've also had some difficulties optimising IDL's image tiling. I
wanted to place tiles off-screen so that they don't need to be fully
redrawn when they become visible. I kept finding that the off-screen
tiles were not being stored in the GPU and I had to re-render them on
demand.

I think that these kind of tricks are really beyond IDL at the moment.
IDL provides a level of abstraction that is easy to program but
difficult to optimise. If I wanted to render using openGL then I would
write a C++ application using Coin3D. I would probably call that
application as a DLM from IDL or insert it as an ActiveX component.

Robbie
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